p_excit_1_5_janev Function

  1. atomic_tables.f90
  2. atomic_tables
  3. p_excit_1_5_janev

public function p_excit_1_5_janev(eb) result(sigma)

Calculates cross section for a proton-Hydrogen impact excitation transition from the state to the state at energy eb

Equation

References

Arguments

Type IntentOptional AttributesName
real(kind=Float64), intent(in) :: eb

Relative collision energy [keV/amu]

Return Value real(kind=Float64)

Cross Section []


Called by

proc~~p_excit_1_5_janev~~CalledByGraph proc~p_excit_1_5_janev p_excit_1_5_janev proc~p_excit_1_janev p_excit_1_janev proc~p_excit_1_janev->proc~p_excit_1_5_janev proc~p_excit_n p_excit_n proc~p_excit_n->proc~p_excit_1_janev proc~p_excit_n_m p_excit_n_m proc~p_excit_n_m->proc~p_excit_n proc~p_excit p_excit proc~p_excit->proc~p_excit_n proc~write_bb_h_h write_bb_H_H proc~write_bb_h_h->proc~p_excit program~generate_tables generate_tables program~generate_tables->proc~write_bb_h_h

Contents

Source Code

p_excit_1_5_janev

Source Code

function p_excit_1_5_janev(eb) result(sigma)
    !+Calculates cross section for a proton-Hydrogen impact excitation transition from
    !+the \(n=1\) state to the \(m=5\) state at energy `eb`
    !+
    !+###Equation
    !+$$ H^+ + H(1) \rightarrow H^+ + H(5) $$
    !+
    !+###References
    !+* Eq. 30 and Table 5 in Ref. 2 [[atomic_tables(module)]]
    !+
    real(Float64), intent(in) :: eb
        !+ Relative collision energy [keV/amu]
    real(Float64)             :: sigma
        !+ Cross Section [\(cm^2\)]
    real(Float64), dimension(8), parameter :: b = [1.2449d0, 3.0826d-4,   &
                                                   0.31063d0, -2.4161d0,  &
                                                   0.024664d0, -6.3726d0, &
                                                   32.291d0, 0.21176d0 ]
        !+ Fitting parameters from Table 5 in Ref. 2

    sigma = 1.d-16 * b(1) * (b(2)*exp(-b(3)*eb)/ &
                     (eb**b(4)+b(5)*eb**b(6)) + &
                     exp(-b(7)/eb)*log(1.+b(8)*eb)/eb)

end function p_excit_1_5_janev